制冷工质压力对红外用波纹管J-T制冷器制冷性能的影响研究  

Research on the Influence of Refrigerant Pressure on the Refrigeration Performance of Corrugated Tube J-T Cooler for Infrared Application

作　　者：张永壮 韩蓬磊 饶启超 苏鹏翼 徐千 ZHANG Yong-zhuang;HAN Peng-lei;RAO Qi-chao;SU Peng-yi;XU Qian(North China Research Institute of Electro-Optics,Beijing 100015,China)

机构地区：[1]华北光电技术研究所,北京100015

出　　处：《红外》2024年第7期35-41,共7页Infrared

摘　　要：通过具体实验研究了制冷工质压力对波纹管自调式J-T制冷器制冷性能的影响。实验工况内的结论如下:在一定的压力范围内(11 MPa≤P≤23 MPa),随着工质压力的增大,应用该款制冷器的红外系统的启动时间逐步缩短,但启动加快的速率会随工质压力的增大而减小。当工质压力增大到一定程度(23 MPa≤P≤27 MPa)时,启动时间将趋于稳定。在一定的压力范围内(11 MPa≤P≤15 MPa),随着工质压力的增大,应用该款制冷器的红外系统的蓄冷时间逐步加长;但工质压力增大到一定程度(15 MPa≤P≤27 MPa)时,蓄冷时间将趋于稳定。在一定的压力范围内(11 MPa≤P≤27 MPa),随着工质压力的增大,制冷器启动时的最大流量呈线性增大趋势,运行时的稳定流量呈逐步增大趋势。本文实验研究的过程方法和研究结果具有工程借鉴意义。The influence of refrigerant pressure on the refrigeration performance of a corrugated tube self-adjusting J-T cooler was studied through specific experiments.The conclusion of the experimental conditions is that within a certain pressure range(11 MPa≤P≤23 MPa),as the working fluid pressure increases,the start-up time of the infrared system using this refrigeration device gradually shortens,but the rate of accelerated startup will decrease with the increase of working fluid pressure.When the working fluid pressure increases to a certain extent(23 MPa≤P≤27 MPa),the startup time will tend to stabilize.Within a certain pressure range(11 MPa≤P≤15 MPa),as the working fluid pressure increases,the storage time of the infrared system using this type of cooler gradually increases.But when the working fluid pressure increases to a certain extent(15 MPa≤P≤27 MPa),the cold storage time will tend to stabilize.Within a certain pressure range(11 MPa≤P≤27 MPa),with the increase of working fluid pressure,the maximum flow rate of the refrigerator increases linearly during startup,and the stable flow rate gradually increases during operation.The process,methods,and research results of this experimental study have reference significance for engineering practice.

关 键 词：制冷工质压力 波纹管自调式J-T制冷器 制冷性能 实验研究 

分 类 号：TB651[一般工业技术—制冷工程]